Physicists are quietly rewriting one of the most basic units in science, using a new generation of optical clocks that can keep time so precisely they barely lose a beat over the age of the universe.

BEIJING, May 25, 2021 /PRNewswire/ -- WiMi Hologram Cloud Inc. (Nasdaq: WIMI) ("WiMi" or the "Company"), a leading Hologram Augmented Reality ("AR") Technology provider, today announced that it won ...

Fifth-graders just finished a woodlands unit in science. Students learned about the parts of the seed — seed coat, stored food and embryo. Class members got to make their own model of a seed using a ...